Safety apparatus for oil-storage tanks



PY 8, m3@- H. J. BUcKnNG 1,753,401

SAFETY APPARATUS FOR OIL STORAGE'TANKS Filed Nov. 24, 1926 i 15drawings, in which shell 31.

Patented Api. s, 1930 I l 1,753,401

UNITE-D STATES PATENT OFFICE HENRY J. BUCKING, OF SAN FRANCISCO,CALIFORNIA SAFETY APPARATUS FOB OIL-STORAGE TANKS Application medNovember 24, 1926. Serial 170.150,558.

This invention relates to safety apparatus tween the screen members 18and 2O is a body for oil storage tanks, and it has for one of its ofmineral wool 21. It is to be understood objects the provision ofapparatus for prethat other mateiial than mineral wool may be ventingthe oil in storage tanks from being employed, and that suoli materialmay be any ignited by lightning or otherwise. non-combustible porousmaterial:permitting 55 Another obj ect of the invention is the prothegas to iiow from the inner screen inc iiibei vision of fireextinguishing apparatus for 2O into the space between the sci-een memberoil tanks. 18 and the shell 16. Secured toene eiid of the With tlieforegoing objects in view, toshell 16 is a tapered shell 25. /At'tliesmall gether with such other objects and advanend of the tapered conicalshell 25 isvsecured 80 tages as may subsequent-ly appear, thisininvert-ical position a screen 26. A pipe 27 veiition resides in theconstruction and arconnects with the smaller end of the taperedrangement of parts hereinafter described and conical shell 25. The pipe27 is formed with claimed, and illustrated in the accompanying a trap 28and at 30 enters the bottom of a.

Figure 1 is a side elevation partly in sec- The tower 31 is providedwith spaced tion of the apparatus embodying my inventransverse circularperforated plates 35 tion; which are made of two pieces similar to theFigure 2 is al vertical sectional view of part semi-circular perforatedplate shown in Figof the apparatus shown in Figure 1; Y ure 4, andthetower is further provided with ,Y Figure 3 is a section taken on line3-3 of alternating perforated plates 36, each made Figure 2, and of twosemi-circular plates of the type shown Figures 4 and 5 are respectivelysemi-circuin Figure 5. lar perforated plates employed in the appa- Thevapors emerging from 'the pipe 27 pass 25 ratus in my invention. throughthe water seal and through the aper-l 75 through small openings abovethe oil level. latter, "Running from the top of the tower Referring tothe drawings for a more detures of the plates 35 and 36. It will benoted tailed descriptiony thereof, the numeral 7 iiifrom the dispositionof these perforated dicates an oil storage tank. The numeral 8 platesthat the vapors must take a tortuous indicates a body of oil partlyfilling thetank. path. As the vapors rise through the tower 30 It iswell known that vapors arise fiom the they are condensed by waterfalling downoil; and it is further known that these vapors, wardly froma pipe 37 having outlets 38 and mixed with air, form a combustible andeven 39 which let the water fall into sprinklers 40. i an explosivecombination. The air which An overflow pipe ilcarries off the water andmixes with the VapOlS gets into the tank the Condensed vapors forrecovery. of the It is therefore desirable to withdraw the oil is a pipe42 including a pressure valve 43; vapor from the tank. and means areprovided this pipe Connects with the top of a tmp 45 for performing thementioned operation. having therein a check Valve 46. Such meanscomprises a plurality of pipes 10 To XtinUuiSh a fire in the tank Iprovide radially secured to a hollow center member 11 a Steam pige 50throiwh which team may 90 to which is secured a pipe 12 provided with abe`ntroduced no the'tnk valve 13 which is connected to a pump 14. Fromthe foregoing descriptn it will be rIhe operation of the pump 14 iseffective to withdraw vapors from the tank and to pass Maddy appreciatedby those Sklued m the art that the apparatus is adapted to carry out 95such vapors into a member 16 shown in der mii in Figure Q The member 16comprises ,i the aforementioned obiects of the invention.

shell 17 enclosing a screen member 18 latervvhlle I have ShPWH only thePIGGI'IG ally spaced therefrom. Vithin the screen form ,0f theHilventloni 1t ShQuld b? unfel" member 18 and spaced laterallyvtherefrom is stood that various changes or modifications another screeninember'20, and interposed bemay be made within the scope of the claimshereto attached without departing from the spirit of the invention.

I claim: n 1. In a device of the type described, a cas- 5 ing having ascreened inlet and a screened outlet, a screened cylinder mounted insaid casin sind connecting with the inlet end, said cylinder having aclosed end and the'wall of said cylinder being siaced from said casing,a second screen cy n er disposed within said first cylinder and beingspaced therefrom said second named cylinder having one end connectingwith the inlet and having its other end closed by a screen, the spacebetween the screened cylinders being filled with afbrous material. Y

2. In a device of the t pe described, acasing having a screened inlet, ascreened cylinder mounted in said casing and connecting with the inletend, said cylinder havin a closed end and the wall of said cylinder eingspa'ced from said casin `a, second screen cylinder disposed Within saidfirst cylinder and bein s aced therefrom, said second named cy in erhaving one end connecting with the inlet and having its other end closedby a screen. y

.HENRY J. BUCKING.

